The Amanojaku is a Synergist. It learns all the elemental attack spells, but does not learn any other commands. It has low HP growth and thus it may be more worthwhile to infuse the Amanojaku into another Synergist that does not possess any of the En-spells, like Yakshini or Gigantuar.

Amanojaku's utility as a source of En-spells is a compromised by its rarity at low player level. It learns Auto-Vigilance after Enfire and Enfrost, and on the way to Enthunder. Auto-Vigilance is potentially a detriment, as it is not as useful as Auto-Protect and the like, but is ranked higher than them (Auto-Protect is Rank 7, Auto-Vigilance, Rank 8). Auto-Vigilance is impossible to get rid of without yellow-locking up to nine other abilities.